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E21S's Copper upgradeMinecraft mod for 1.21.8

The mod allows you to upgrade your tools with copper, making copper a more sought after resource

client and servernewest supported 1.21.8EquipmentGame Mechanics
Latest version
2.1
Loaders
Forge, NeoForge
Licence
LicenseRef-All-Rights-Reserved
Downloads
337
Updated
4 mo ago
Available on
Modrinth
Space NodePartner

Host E21S's Copper upgrade servers

One click and E21S's Copper upgrade is installed with the right loader, on hardware built for it.

  • 1.21.8
  • Forge
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version E21S's Copper upgrade declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.8Forge, NeoForge21+declared17 Jul 2025
1.21.4Forge, NeoForge21+declared3 Dec 2024
1.20.1Forge, NeoForge17+declared12 Jun 2023

Download

From E21S's Copper upgrade’s own host. Nothing is re-hosted here.

2.1release9 Apr 2026

es_copper_update-2.1-forge-1.20.1.jar · 0.2 MB · for 1.20.1

Download latest
519858340b13
Older versions9
  • 2.0.214 Feb 20261.20.10.2 MB26 downloadsd30c74fa578eGet
  • 2.0.11 Feb 20261.20.10.2 MB20 downloads2cb1586d2343Get
  • 2.027 Jan 20261.20.10.2 MB14 downloads3f0d9a292a1aGet
  • 1.1.330 Oct 20251.21.81.0 MB15 downloads4fa137467b2bGet
  • 1.1.227 Jun 20251.21.41.0 MB36 downloads729c1e168238Get
  • 1.1.126 Jun 20251.21.41.0 MB72 downloads4b20acab048cGet
  • 1.1.024 Jun 20251.21.40.1 MB22 downloadsfea6208034d5Get
  • 1.0.130 May 20251.20.10.1 MB27 downloads363a98bc731aGet
  • 1.0.023 May 20251.20.10.0 MB29 downloadsf49749793d39Get

Frequently asked

Does E21S's Copper upgrade work on Minecraft 1.21.8?

Yes. 1.21.8 is the newest Minecraft version E21S's Copper upgrade declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does E21S's Copper upgrade support?

Everything the author has declared, from 1.20.1 up to 1.21.8. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install E21S's Copper upgrade on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which loader does E21S's Copper upgrade need?

Forge, NeoForge. A build for one loader will not load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for E21S's Copper upgrade?

Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the mod itself.

What licence is E21S's Copper upgrade under?

LicenseRef-All-Rights-Reserved, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install E21S's Copper upgrade?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download E21S's Copper upgrade safely?

From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

Last checked 6 d ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .